Along with Utah, Colorado is one of six states under the jurisdiction of the Tenth Circuit; the others are Wyoming, Kansas, Oklahoma and New Mexico.

The Tenth Circuit is also expected to soon issue a ruling on Oklahoma’s marriage ban.

The Colorado suit asserts the 14th Amendment “protects the fundamental right to marry, establish a family, raise children, and enjoy the full protection of a state’s marital laws,” a quote taken from last week’s Tenth Circuit decision. “A state may not deny the issuance of a marriage license to two persons, or refuse to recognize their marriage, based solely upon the sex of the persons in the marriage union.”

The suit is seeking to have legal same-sex marriages performed out-of-state recognized by the state of Colorado, as well as the right of same-sex couples to marry in Colorado.

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The plaintiffs are asking for an injunction stopping all officials from enforcing Colorado‘s constitutional ban on same-sex marriage, approved by voters in 2006.

Although some of the couples in the lawsuit have civil unions in Colorado, the lawsuit calls them unequal and an inadequate substitute to marriage.